One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(5,6)(7,14)(8,12)(9,18)(10,13)(11,16)(15,20)(17,19)(21,22)(23,32)(24,28)(25,39)(26,31)(27,35)(29,37)(30,38)(33,45)(34,46)(36,48)(40,41)(42,50)(43,49)(44,52)(47,51)(1,3,4,2)(5,7)(6,11)(8,17)(9,15)(10,16)(12,20)(13,14)(18,19)(21,22)(23,27)(24,30)(25,29)(26,31)(28,38)(32,35)(33,41)(34,43)(36,44)(37,39)(40,45)(42,51)(46,49)(47,50)(48,52)(5,8,10,9)(6,12,13,18)(7,15,16,17)(11,19,14,20)(21,23,33,49,24,34,25,35,26,36,37,50,38,51,40,52)(22,27,41,46,30,43,29,32,31,44,39,47,28,42,45,48)(5,9,10,8)(6,12,13,18)(7,15,16,17)(11,20,14,19)(21,24,26,38)(22,28,31,30)(23,34,36,51)(25,37,40,33)(27,42,44,43)(29,41,45,39)(32,46,48,47)(35,50,52,49)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.